Hillside

This is a polygon data set representing areas designated as hillsides, by Boise City, within the Boise Area of Impact. Section 11-14-02.1 of the Boise Municipal Code defines hillside areas as “any topographical slope” that “exceeds fifteen percent (15%) or where adverse conditions associated with slope stability, expansion soils, high water table and springs, erosion or sedimentation are present.” Hillside areas were originally defined based on visual analysis of digital 7.5’ USGS topographic maps and interpretations made by City of Boise Public Works Department staff. The hillside polygons represent generalized areas where relatively steep slopes or adverse conditions are present. Boise City GIS developed the hillside dataset under direction from the Boise City Public Works Department staff. This data is updated upon request by the Boise City Public Works Hillside Engineer Technician, and is current to the date it was published.本多边形数据集涵盖博伊西市（Boise City）在博伊西影响区域（Boise Area of Impact）内划定的山坡区域。《博伊西市政法典》第11-14-02.1条将山坡区域定义为“坡度超过15%的任何地形坡度，或存在边坡稳定性、膨胀土、高地下水位与泉水、侵蚀或沉积相关不利条件的区域”。山坡区域最初基于对7.5分数字化美国地质调查局（United States Geological Survey, USGS）地形图的目视分析，以及博伊西市公共工程部工作人员的解译结果进行划定。本山坡多边形数据集中的多边形代表存在较陡坡地或不利条件的概化区域。博伊西市地理信息系统（Geographic Information System, GIS）在博伊西市公共工程部工作人员的指导下开发了本山坡数据集。本数据由博伊西市公共工程部山坡工程技术员根据申请予以更新，数据时效性至发布当日。